Use SNR for Wav signals

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Rihanna Waterson
Rihanna Waterson on 25 Jun 2015
Edited: Rihanna Waterson on 25 Jun 2015
I have implemented an audio steganography program. One way to evaluate your steganography method is to use SNR. The formula I found for snr calculation is mentioned below. The problem is my original file size is exactly the same as the secend file size so the formula is not working for me. How should I use SNR to evaluate my method?
Mer (mean error rate) = coverfilebits – embeddedfilebits / coverfilebits
sizeinfo=size of the cover file
snr=(20*log10(sizeinfo / mer))

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